Drive for traverse mechanism



Nov. 20, 1951 J. L; KILLORAN 2,575,385

DRIVE FOR TRAVERSE MECHANISM Filed July 4, 194@ 4 Sheets-Sheet 1 INVENTQR. JOSEPH L. KILLORAN ATTQRNEYS.

4 Sheets-Sheet 2 J. L. KILLORAN DRIVE FOR TRAVERSE MECHANISM AN K Nov. 20, 1951 Filed July 4, 1945 INVENTOR.

JOSE PH L. KI'LLORAN.

Km ATTORNEYS.

Nov. 20, 1951 J. L. KILLORAN DRIVE FOR TRAVERSE MECHANISM 4 SheetS-Sheet 5 Filed July 4, 1945 vflZM M AT TOR N EYS.

INVENTOR EPH L KILLORAN.

MN I H 7 E5 1 mi 5 mm 7 W M I M mm m m ww il 5 I 5 ll i ht Nov. 20, 1951 J. L. KILLORAN DRIVE FOR TRAVERSE MECHANISM Filed July 4, 1945 4 Sheets-Sheet 4 INVENTOR.

JOSEPH L. KILLORAN.

ATTORNEYS Patented Nov. 20, 1951 DRIVE FOR TRAVERSE MECHANISM Joseph L. Killoran, Drummondville, Quebec, Canada, assignor to Celanese Corporation of America, a. corporation oi Delaware Application July 4, 1945, Serial No. 603,157

' 19 Claims. (Cl. 242-433) This invention relates to traverse mechanisms for textile machines, and relates more particularly to hydraulic drives for traverse mechanisms for use in connection with the yarn winding devices on spinning machines.

In drives for traverse mechanisms of the type heretofore employed, the use of traverse cams and drives therefor presented many mechanical difiiculties making for a continual source of trouble.- Another factor which contributed to lower considerably the efliciency of prior traverse mechanisms was the produced defects in the build of the yarn package due to the inherent troubles resulting from the cam driven traverse.

It is an object of this invention to provide an improved traverse mechanism for textile machines which will be free from the foregoing and other disadvantages and which will be especially simple in construction and efiicient in operatlon.

Another object of this invention is the provision of a traverse mechanism for a textile machine wherein traverse cams and traverse drives are eliminated and the defects in'the build of the yarn package due to the use of traverse cams are avoided.

A further object of this invention is the provision of a hydraulic traverse mechanism fora yarn spinning machine which causes the traverse bar to move with a reciprocating motion at a uniform speed.

, Still another object of this invention is to provide an improved traverse mechanism for a textile machine for producing yarn packages of superior construction.

Other objects and advantages of this invention, together with certain details of construction and combinations of parts, will appear from the following detailed description and drawings.

In the drawings wherein a preferred embodiment of this invention is shown,

7 Figure 1 is a partial front elevational view of a spinning machine showing the hydraulic traverse mechanism of this invention operatively connected thereto,

Figure 2 is a front elevational View of the hydraulic traverse mechanism per se,

v Figure 3 is a perspective view of the rear of the hydraulic traverse mechanism, on a slightly smaller scale,

Figure 4 is a cross-sectional view, on an enlarged scale, of the cylinder and valve structures of the traverse mechanism,

Figure 5 is a side-elevational view of the travars m m,

Figure 6 is a cross-sectional detail view of the mechanism for-providing a superimposed traverse or creeping motion, and

Figure '7 is a cross-sectional view taken on line, '!1 of Figure 2.

Similar-characters of reference indicate similar parts throughout the several views of the drawings.

In its broadest aspect the present invention comprises a traverse mechanism providing a re-, ciprocating motion at uniform speed by means of a double acting hydraulic cylinder with a piston driven by hydraulic pressure. Uniform speed of motion is assured by using a positive displacement type liquid pump rotating at constant speed. The volume of liquid passing through the pump and cylinder is practically independent of pressure fluctuation, permitting the piston to move at a uniform speed. The constant flow of liquid assures the instantaneous reversal of the piston when the flow of liquid to the cylinder is reversed.

Referring to the drawings for a detailed description of my novel traverse mechanism, the reference numeral 8 indicates generally a spinning unit which comprises a plurality of spinning chambers or cells 9, a single spinning unit being made up of up to 50, or even more cells. The bundles of freshly spun filaments issuing from the cells 9 are twisted and wound upon suitable bobbins or other yarn'supports by a ring spinning and winding arrangement generally indicated by reference numeral I l. The twisting and winding arrangement includes reciprocatingring rails l2 and I3 which are operated by my novel traverse mechanism generally indicated by refer-' ence numeral [4. The traverse mechanism is supported by a transverse beam 15 of the spinning unit, being attached thereto by bolts 16.

The drive of the traverse mechanism com-.. prises a double-acting oil cylinder ll containing a piston l8 to which is fixed a. piston rod Ill. The piston rod extends through glands 2| at; both ends of the cylinder and each extension is provided with a rack 22. The racked portion of the extension is carried in a cylindrical bearing member 23 for reciprocation therein. In con nection with each bearing member 23 there is provided a housing 24. In each housing 23, there is journaled a cross-shaft 25, 25' 'on which is fixed a spur gear 26 adapted to mesh with and be rotated by rack 22. Externally of housings 24, there is flxedto each cross-shaft 25, 25 an (ac-- centric roller chain sprocket 21, the purpose of which will be set forth hereinaiter.

A pneumatically operated cylindrical quick acting valve, generally indicated by reference numeral 28, is provided to effect instantaneous reversal of the flow of oil operating the piston I8 of the oil cylinder I4. The valve casing is provided with integral brackets 29 adapted to be attached by means of bolts 31 to bosses 32 integral with the casinggof oil cylinder; I4 so as; to support'thei reversing'valvetherefrom. The reversing valve 28 is provided with a piston 33 having annular A projections 34 thereon for selectively closing ports- 35 in the casing of the reversingvalvethus con,- trolling the flow of oil to the oil cylinder I4 through conduits 36 connected to the-portsancb to the end walls of the oil cylinder.

Piston 33 is reciprocated in the reversing valve cylinder 28 by air pressure contrpll edibya suite,

able valve, generally indicated by reference numeral 31, operated by the rotation of cross-shaft The air valve 3l issprovided with an inlet L through suitable openings 46am brackets 29. The

tripping ofthe latching mechanism 44- permits the piston '33 to move-to the other end of the cylinder of the reversing valve 28 at which pointit again latched-g thusopening the port 35,. which was-closed? toone-conduit 3i and closing the-other portwhich was open, the l'atter port being operatively connected in this position of the-piston 33 to oil exhaustpipefil -which returns -the'oil-tooilsupply tankifl. I

The oil supplied tc-va1ve--28' and-thencetooyi inder I d is-furnished bytanlc48-- through-pipeAS- 1n-- which is provided a--valve 51; supplied-to a pesitive displacement type-oil pump' 62y-which may bedriven from a spinning machine' element so-that-any-change-in thespeed-of the machine-may producea -corresp onding change inthe-speedofthe traverse'or; as -shown, it may-be operated by a motor 53: which feeds the oil under suitable" pressure through pipe 54% having afluidpressure gauge 55'-therein, to-branched pipe-'- 56" for selectively supplying'eil under pressuretothe desired port -35." The-use of a: positive displacement type ofoil pump rotatingat constant speed assures uniform speed ofmotion. The volume of on passing;-through-the-pump-and cylinder is-practicallyindependent of pressureilumtuations. Therefore; the piston moves at--auniform speed. This constant flow of oil-also assures substantially instantaneous reversal of the piston when the new of oil to the cylinderisv reversed. Any oilseepingpast annular bearing members 5l-integral with piston 33 isremoved through ports 58;- coupling 59 and-tubing IiI to a suitable-drain (notashown); Stop cocks' fiz are provided at each end of cylin'der I4 to bleed any air contained therein. g

The latching and tripping mechanisms com prisedogs 63; 63? which are pivotedon pins -64 fl'xed-inthe walls o f 'cy'linder 33 and have apb f' tion extending intoopening 64" in piston-33; The

The oil l is dogs are pulled toward each other by means of a contractile spring 65 mounted in apertures 66 in the heads of said dogs. The dogs are latched separately, i. e. when one is latched, the other is unlatched. The latching is effected by means of bell-crank levers 61, El pivotally mounted on pins 88 carried by brackets 69 mounted on cylinder; The, lower or horizontal .branch of the bell-crank levers" are bifurcated to receive the head of dog 63, and the extremity of each of said lower branches has journaled therein a roller bearing TI. Thep bell-crank levers 61, 6'! are spring loaded, a contractile spring I2 being connected-to-theextremity of each of the vertical branches of the bell-crank levers and to cylinder I4. The springs 72 are adapted to force h .l w r. branchpf the levers 61, 67' into latching position. The vertical branches of the bell- :crank levers are provided with adjustable bolts '13 for cooperating with projections I4 on brackets fi'9 and progiections iion rod-fifii- The rod i fi is connected to a connecting-bar- 15 through free-wheeling device generally indi-'- ca tedcby' reference numeral T6 (see Figures 2 and 6). The connecting ban 15 passes through-a: suitable; passage its a guide bracket 'II mounted on one -013- the bearing members:2'3";- and the free endof said connecting bari is providedwith-a rollerbearingifi' adapted toreceive the thrust of'projections 'ifi on' cam43 during the trippingoperation of' thelatchingmechanismc Thefree-wheelingdevice- TE provides a-- very small superimposedtraverseor creepingmotion on the main traversez This-is eiiected-by meansof an eccentric sleeve 8 I-0n=- whichis mounted a housing--82 having-fixed thereto a link 831 A connecting link- 8'4 is/ pivotally attached at 'one endthereoi tolink-83 and atthe other end thereof to earn $3 1 The ccnnectihg bar 15' is-piv-- otally attached to a housing 85 which is mounted on andcovers a ball -raieeb'E- on the eccentric siee've 8I-. A cover 8-l is-screw-threaded on-housing 82; The eccen-tric sleeve8"I is rotated' with a ratchet-like motion-and with no-back drive;- a small amount on each stroke-of the mainpiston IS The amount of rotation of the-eccentricsleeve is adjustable byadjusting the position of connecting--link'- 84 along the' lengtliof link 83;

On each of sprockets 2 7 is'attaclied one end? of a-roll'er cha-in 88 the other-'end of sai'd roller chain being attached to a horizontally recipro-- eating rod 89; Also attached to-said-rod-89 --is one end of a roller chain I which is trained over. an idler sprocket =92;- the lower end of said roller chain 9i being suitably-fixedto- -the-lower ex tremity of alifter rod 93' mou-ntedfor vertical reciprocation in-a-Iifter-rod bracket 94 As-showm in Figure- 1,- two traversing' ring rails I2 and I3 are-provided;- eachoperating; with-"respect-to onehalf of=the-bobbins 95 on thespindle bank. The sprockets 2 1 are arranged to* pull in opposite directions; each driving one --traversing ring rail, thus providing a-balanced traverse, thatvis; the traversing ring. railon -one halfof the 'spirming unit is going up while the other going down.- l n Fi'gure l; the leithandsprocket 21 is shown with rod a pulledtoward the' -left, thus oper ating the lifte-r rods Sit-on that. side of the-unit to-push' upwardly the traversing'ring rail" I 2 and to cause traversing ring rail I3 to be lcwere'd:

The eccentricity of 'sprockets fi'l provides a uniform accelerated rate of traverse tothe ringrails thus producing the desiredttaper eithe -package of yarn-beingwound; Whilemy novel drive for the traverse mechanism is designed to obtain as 8 close as possible instantaneous reversalat the end of the stroke, it will be realized that absolute instantaneous reversal is a physical impossibility; a slight amount of deceleration and acceleration occurs at the end of the stroke giving rise to a slight accumulation of yarn at the end of the bobbins. This is spread out by the free-wheeling device above described which superimposes a miniature slow speed traverse on topof the main traverse, in other Words by setting the main traverse very slightly shorter than the actual traverse between the flanges of the bobbins and then gradually shifting it up and down to the extent of the difference.

While balancing the drive of this invention by having half of the traverse rising while the other half-is lowering is advantageous, it will be appreciated that one of the drive sprockets 2'! may be omitted entirely and the whole device driven from the other drive sprocket. Moreover, although uniformly accelerated traverse speed is provided by means of the eccentric-drive sprocket as shown, a uniform traverse speed, which will traverse a straight parallel cylindrical package instead of a tapered package, may be provided simply by replacing the eccentric sprocket by an ordinary concentric sprocket.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of my invention.

Having described my invention, to secure by Letters Patent is:

1. A drive for a traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto, means including a fluid operated piston mechanically connected to said sprocket for rotating said sprocket, means for supplying fluid under pressure for moving said piston, and means, including a pneumatically operated valve, for controlling the flow of fluid to said piston.

2. A drive for a traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto, means including a fluid operated piston mechanically connected to said sprocket for rotating said sprocket, means for supplying fluid under pressure for moving said piston, means, including a pneumatically operated valve, for controlling the flow of fluid to said piston, said valve comprising a cylinder and a piston mounted therein for reciprocating relative thereto, and means operated by the movement of said first-mentioned piston for effecting movement of said second-mentioned piston.

"3. A drive for a traverse mechanism of a .teX- tile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto, meansincluding a double-acting oil cylinder and a piston mechanically connected to said sprocket and mounted for reciprocatory movement in said cylinder for rotating said sprocket, means for supplying oil under pressure to said cylinder for causing said piston to reciprocate therein, and means, including a pneumatically operated valve, for controlling the flow of oil to said cylinder.

4. A drive for a traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement-thereto; means inwhat I desire cluding a double-acting oil cylinder and a piston mechanically connected to said sprocket and mounted for reciprocatory movement in said cylinder for rotating said sprocket, means for supplying oil under pressure to said cylinder'for causing said piston to reciprocate therein, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said firstmentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder and pneumatic means for operating said piston for selectively permitting the flow of oil from one cylinder to the other.

5. A drive fora traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto, means including a double-acting oil cylinder and a piston mechanically connected to said sprocket and mounted for reciprocatory movement in said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder for reciprocation therein, and pneumatic means for operating said piston for selectively permitting the flow of oil from one cylinder to the other.

6. A drive for a traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto, means including a double-acting oil cylinder and a piston mounted for reciprocatory movement therein for rotating said sprocket, means for supplying oil under pressure to said cylinder for causing said piston to reciprocate therein, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder; operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder for reciprocation therein, and pneumatic means including a valve operated by said first-mentioned piston for operating the piston in said secondmentioned cylinder for selectively permitting the flow of oil from one cylinder to the other.

7. A drive for a traverse mechanism of a textile machine, comprising a sprocket operatively connected to the traverse mechanism for applying a reciprocatory movement thereto,- means including a double-acting oil cylinder and a piston mounted for reciprocatory movement therein for rotating said sprocket, means for supplying oil under pressure to said cylinder for causing said piston to reciprocate therein, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a

piston in said second-mentioned cylinder for re-- connectedto the traverse mechanism for applyest-asst tion thereof, means'for supplyingioil under pressure ito said cylinder for effecting movementof said piston and said piston rod with respect to said "cyliridrj'a'nd'ineans'for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second- Y mentioned cylinder for reciprocation therein, a pneumatic means including a valve operated by the rotation of one of said shafts for operating the rotation of one of said shafts for operating the piston in said second-mentioned cylinder for selectively permitting the flow of oil from one cylinder to the other, means for latching the latter piston at the end of each stroke thereof, and means operated by the other of said shafts for releasing said latching means.

16. A drive for a traverse mechanism of a textile machine, comprising a double-acting oil cylinder, a piston mounted for reciprocatory movement therein, a piston rod connected to said piston and extending through both ends of said cylinder, a shaft operatively connected to each of said piston rod, said shafts being adapted to be rotated by said piston rod simultaneously in opposite directions, a sprocket mounted on each shaft, a connection between each of said sprockets and the traverse mechanism whereby the rotation of said sprockets by movement of said shafts causes the reciprocation thereof, means for supplying oil under pressure to said cylinder for effecting movement of said piston and said piston rod with respect to said cylinder, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second- ,mentioned cylinder for reciprocation therein,

pneumatic means including a valve operated by the rotation of one of said shafts for operating the piston in said second-mentioned cylinder for selectively permitting the flow of oil from one cylinder to the other, means including dogs on the piston in second-mentioned cylinder for latching said piston at the end of each stroke thereof, and means operated by the other of said shafts for releasing said latching.

17. A drive for a traverse mechanism of a textile machine, comprising a double-acting oil cylinder, a piston mounted for reciprocatory movement therein, a piston rod connected to said piston and extending through both ends of said cylinder, a shaft operatively connected to each end of said piston rod, said shafts being adapted to be rotated by said piston rod simultaneously in opposite directions, a sprocket mounted on each shaft, a connection between each of said sprockets and the traverse mechanism whereby the rotation of said sprockets by movement of said shafts causes the reciprocation thereof, means for supplying oil under pressure to said cylinder for effecting movement of said piston and said piston rod with respect to said cylinder, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said firstmentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder cluding a valve operated by the rotation of one 'of said:shafts forope'rating thefipiston in' said second-mentioned cylinder for selectively permitting the. flow-ofgoiljfl'om one cylinder to the oth er, ,means including d o gs on the piston .in

second 'mentioned cylinder and latches cooperat- 3 ing withsaid dogsfor latching said piston at the for reciprocation therein, pneumatic means in- 76 end of each -stroke thereof *andmeans', including a cam and rod cooperating with said cam operated by the other of said shafts for releasing said latches at predetermined times.

18. A drive for a traverse mechanism of a textile machine, comprising a double-acting oil cylinder, a piston mounted for reciprocatory movement therein, a piston rod connected to said piston and extending through both ends of said cylinder, a shaft operatively connected to each end of said piston rod, said shafts being adapted to be rotated by said piston rod simultaneously in opposite directions, an eccentric sprocket mounted on each shaft, a connection between each of said sprockets and the traverse mechanism whereby the rotation of said sprockets by movement of said shafts causes the reciprocating member of the traversing means to move at a uniformly accelerated rate of traverse, means for supplying oil under pressure to said cylinder for effecting movement of said piston and said piston rod with respect to said cylinder, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder for reciprocation therein, pneumatic means including a valve operated by the rotation of one of said shafts for operating the piston in said second-mentioned cylinder for selectively permitting the flow of oil from one cylinder to the other, and means on said rod and operated by said cam for superimposing a small traverse on said first-mentioned traverse.

19. A drive for a traverse mechanism of a textile machine, comprising a double-acting oil cylinder, a piston mounted for reciprocatory movement therein, a piston rod connected to said piston and extending through both ends of said cylinder, a shaft operatively connected to each end of said piston rod, said shafts being adapted to be rotated by said piston rod simultaneously in opposite directions, an eccentric sprocket mounted on each shaft, a connection between each of said sprockets and the traverse mechanism whereby the rotation of said sprockets by movement of said shafts causes the reciprocating member of the traversing means to move at a uniformly accelerated rate of traverse, means for supplying oil under pressure to said cylinder for effecting movement of said piston and said pis-.- ton rod with respect to said cylinder, and means for controlling the flow of oil to said cylinder, said flow controlling means comprising a cylinder, operatively connected to said first-mentioned cylinder, for initially receiving the oil, a piston in said second-mentioned cylinder for reciprocation therein, pneumatic means including a valve operated by the rotation of one of said shafts for operating the piston in said second-mentioned cylinder for selectively permitting the flow of oil I (References on following page) Certificate of Correction Patent N o. 2,575,385 November 20, 1951 JOSEPH L. KILLORAN It is hereby certified that error appears in the printed specification of the above numbered patent requirlng correction as follows:

Column 4, line8, after the syllable inder and before the period insert :38; column 8, line 36, for eluding read including; column 9, line 16, strike out rotation of one of said shafts for operating the; line 29, after each insert end and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 4th day of March, A. D. 1952.

THOMAS F. MURPHY,

Assistant Gammissioner of Patenta. 

